Copying machine



Dec. 4, 1934. c, w. JEAN COPYING MACHINE Filed Aug. 14, 1931 4 Sheets-Sheet l M a, INVENTOR. BY

A TTORN E YS.

c. w. JEAN 1,983,133

COPYING MACHINE Filed Aug. 14, 1951 4 Sheets-Sheet s ATTORNEYS. v

Dec. 4,, 1934. c. w. JEAN CO PYING MAQHINE.

Filed Aug. 14, 1931 4 Sheets-Sheet 4 A TTORNEYSQ Patented Dec. 4, 1934 COPYING MACHINE Charles Wesley Jean, New York; N. Y. Application August 14, 1931, Serial No. 557,015

'1 Claims.

My invention relates to a new and improved copying machine.

One of the objects of my invention is to provide a new and improved copying machine of the letter press type.

Another object of my invention is to provide improvements in the machine shown in my U. S. Patent No. 1,745,219. 4 Another object of my invention is toprovide a machine of the letter press type in which the copy paper is moistened very slightly so that it comes out of the machine in practically dry'condition.

Another object of my invention is to eliminate the necessity of passing the copy paper, either in the form of individual sheets or otherwise, through a bath of water or other liquid.

Another object of my invention is to provide a machine by means of which the copy paper is delivered in practically dry condition, without the 1 necessity of using alcohol or other quick drying ing understood that the pulley 1 which drives liquid in order to moisten thecopy paper. My machine therefore makes it possible to use water for moistening the copy paper, thus eliminating fire hazard and other objections arising from the use of special liquids for moistening the copy paper.

Other objects of my invention will be set forth in the following description and drawings which illustrate a preferred embodiment thereof, it beabove general statement of the objects of my invention is intended merely to generally explain the same and not to limit it in any manner. 7

Fig. 1 is a side elevation.

Fig. 2 is a top plan view.

Fig. 3 is a front elevation.

t Fig. 4 is a detail view showing the pump which forms part of the machine.

Fig. 5 is a section on the line 5-5 of Fig. 4.

Fig. 6 is a central sectional view.

The machine has a frame F and a motor M. The shaft of the motor M is provided with a a belt 2, which passes around a pulley 3, mounted upon the shaft of a worm 4. The worm 4 dllJES a worm gear 5 and the shaft of the worm gear 5 is provided with a sprocket 6. A chain 7 passes around the sprocket 6, and around sprockets 8 and 8a. The sprocket 8 is on the same shaft as the roller 9, and the sprocket 8a is on the same shaft as the roller 90, so that the rollers 9 and 9a' are turned in the same direction and with the same velocity. These rollers 9 and 9a. are of identical construction.

The roller 9 cooperates with a rubber sleeve 12 a pulley 14 and which is located on a master drum 11. The sleeve 12 is made of ordinary yieldable rubber.

The roller 9a cooperates with a roller 25, also having a sleeve 26 of yieldable rubber.

The machine illustrated is intended to operate with individual sheets of copy paper,'although the invention is not restricted to the use of indi; vidual sheets of copy paper. These sheets of copy paper Pc may be supported upon a table T, as they pass through the machine, and a supplemental table Ta may be provided although the supplemental table is not necessary.

In the view shown in Fig. 6, the machine is operating to feed the sheets of copy paper.

The outer sleeve 12 is provided with a cut-out portion 12a, which has the same curvature as the roller 9. When the machine is inoperative, the top of the roller 9 fits into this cut-out portion 12a, as shown in Fig. 1.

The sleeve 12 is-also provided with another cut- Y out portion in which a clamping device C is provided for holding the adjacent end of the master letter or document P. The clamping device 0' can be of any suitable type for clamping the anterior end of the master letter or document and it may consist of three portions hinged separately, in order to efiectively clamp said anterior end.

The other end of the master document P may rest freely upon the rubber sleeve 12, or an additional clamping device can be provided.

The rollers 9 and 9a are made of stainless steel or other non-rusting metal.

The shaft9b of the roller 9a is provided with a belt 15 passes around this pulley and around a pulley 16, which is mounted upon a shaft 16a. A metal roller 17 is mounted upon the shaft 16a, and this metal roller 17 has an outer rubber sleeve 18 which is provided with recesses or cut-out portions 18a.

This rubber sleeve 18 is in frictional contact with the upper roller 20. which is also made of any suitable non-rusting metal. The upper metal roller 20 has cut-out portions or recesses 20a and20b, which are located directly above the recesses 18a. The machine is also provided with control fingers 21, which are clamped in holders 22, and these holders 22 are turnably mounted upon a transverse rod 23.

As shown in Fig. 1, when the machine is not operating, the control fingers 21 enter the recesses 18a, and they also enter the recesses 20:: and 20b.

Stationary rails or guides 24 are also provided in order to prevent the paper from buckling upwardly. The bearings of the shaft on which the roller 25 is mounted are downwardly movable, in order to produce suitable pressure and a frictional drive between the sleeve 26 and the roller 9a, and a pressure device 2'? of the usual type is provided in order to downwardly urge the bear ing of sleeve 26, in order to press the sleeve 26 against the roller 9a. A similar slidable bearing 28 is provided in order to produce firm pressure and a frictional drive between the roller 9 and the sleeve 12. The sleeve 26 of the roller 25 presses against and frictionally drives a roller 29, which is suitably mounted and which is made of stainless steel or other non-rusting metal. The roller 29 is also pressed against and frictionally drives the roller 30. This roller 30 is made of suitable resilient rubber and it dips into the water or other liquid which is contained in the tank 31. A tray 32 is provided for downwardly feeding the sheets of copy paper P0. The edge of the paper is caught by the rollers 20 and 17, which operate to feed the paper forwardly, so as to tilt the control fingers 21 in the clockwise direction.

The holders 22 are connected to a stop arm 22a whose function will be later described.

As shown in Fig. 1 and Fig. 2, a stop disk 40 is mounted upon the shaft 41, and this stop disk is provided with a stop pin 42. The stop disk 40 is also provided with a cut-out portion which has the same curvature as the rubber sleeve 18, so that a portion of the periphery of the sleeve 18 enters the stop disk 40, when the machine is not operating, this being shown in Fig. 1,'thus producing a positive stopping of the disk at a predetermined point, like a Geneva stop movement.

This stop disk 40 is frictionally driven by the sleeve 18, save when the machine is locked against movement.

The shaft 41 of. the stop disk 40 is provided with an operating finger 51, and this actuates the arm 52 which is pivotally mounted at 53 so that the arm 52 is turned in clockwise direction by the finger 51.

A spring 55 is provided for holding the arm 52 in the locking position shown in Fig. 1, and a stop 56a limits the movement of the arm 52, under the force of the spring 55. A spring or springs 55a are also provided for upwardly urging the upwardly siidable bearing of the drum 11. As previously mentioned, a suitable pressure device is provided for downwardly moving the bearing of drum 11.

The drum is also provided with a weight W. When the drum is locked against movement, the weight W is above the bottom of the drum, so that when the drum is released, the weight W causes the drum to turn in the clockwise direction. The drum is also provided with astop pin 54 which is held by the arm 52, in order to prevent the turning of the drum, save when the arm 52 is moved to the inoperative position.

The operation of the machine is as follows:-

When a sheet of paper has its forward end engaged by the roller 20 and the sleeve 18, the sheet of paper is forwardly fed, thus upwardly tilting the fingers 21 and the arm 22a, so that the pin 42 is released and the stop disk 40 is free to turn. The stop disk 40 is then turned by the sleeve 18, which is always in frictional contact with said disk 40,- thus actuating the finger 51 to tilt the stop lever 52, so as to release the same from the stop pin 54. of the master drum. The master drum is turned in the clockwise direction by the weight W until the cut-out 12a is moved master drum 11, because said master drum is not away from the periphery of the roller 9 so that the roller 9 is then efiective to turn the master drum in the clockwise direction. If only one sheet of copy paper is fedinto the machine, the fingers 21 drop back into the position shown in Fig. 1, as soon as the rear end of the sheet of copy paper has moved beyond the roller 20 and the sleeve 18, so that the arm 22a is then dropped back into locking position. Hence, the further turning of the stop disk 40 is prevented after a complete revolution thereof, and the arm 52 is moved back to the position shown in Fig. 1, after a complete revolution of the master drum.

The machine is therefore set into operation by the feed of each sheet of copy paper.

The master letter or the like P is printed or typed with a suitable hectographic ink. As the sheet of copy paper passes underneath the rubber sleeve 26, it is given a surface moistening which is sufiicient to take off some of the ink on the master letter or document, but this sur face moisture is so slight, that the paper comes out practically dry for all ordinary purposes. The use of the hard metal roller 29 is particularly advantageous because it transfers only a thin film of moisture to the sleeve 26.

The level of the water in the tank 31 is maintained constant. For this purpose an auxiliary water tank 56 is provided and water is forced from the tank 56 to the main tank 31, by means 1 of a pump 57. This pump 57 operates to force water upwardly through the pipe 58. This pipe 58 has an outlet end 59 which delivers the water to the tank 31. The tank 31 has an outlet pipe 60 through which the water passes from the tank 1 31, when the level of the water exceeds a predetermined limit. The water which passes through the outlet pipe 60 falls back into the tank 56. The pump 57 has an inlet pipe 62 and an eccentric 65 which is mounted upon the shaft 1 66. The portionsof the pipes 58 and 62 which are adjacent the eccentric 65, are made of soft rubber or other compressible material so that the pipes 62 and 58 are alternately compressed in order to pump the liquid. The pump shaft 66 1 may be an extension of the motor shaft M, a screw 67 being provided for the necessary assembly. The motor M is provided with a switch S. The pump is. connected to the frame of the machine by means of arms '77; A plate or blade 1 is provided in order to prevent the moisture on the surface of the sleeve 26, from spattering against the master letter P.

The improved machine makes it possible to secure accurate timing of the movement of the 1 released until the shaft 41 has been sufiiciently turned, in order to cause the finger 51 to tilt the stop lever 52. Hence, the drum is not released,

until the front edge of the paper is in the proper position. Of course, the copy is preferably spaced a suitable distance from the front edge of the sheet of copy paperbecause this sheet of copy paper may have a printed letterhead or the like. The type of moistening which is produced by the improved machine may be specified as a surface moistening distinction to the type of moistening which is produced when the sheet of copy paper is led through a bath or is sprayed with a moistening liquid. When a bath or a spray of liquid is utilized, the sheet of paper is moistened so that it emerges in the damp condition from the machine, while the improved machine merely supplies enough moisture to the 15 paper in order to cause the moistenedppaper to take up the hectographic ink.

While I prefer to use ordinary water for moistening the copy paper, I do not wish to be excluded from the use of other liquids, such as alcohol or the like, which dry more readily than water. I

The members 30, 29 and 26 constitute means for applying a thin film of moisture (water or film of moisture to said copy paper, said applir cator means including a resilient roller having a non-porous periphery and a metal roller in contact with said resilient roller, and means adapted to apply the master letter or the like under pressure to the moistened copy paper.

paper, a resilient 2. In a duplicating machine of the hectographic type, means adapted to guide the copy roller having a non-porous periphery and a metal roller in contact with the copy paper, a metal roller in contact with said resilient roller, a supply tank, and a second resilient roller having a portion of its periphery located in said tank, said resilient roller being in contact with said metal roller, and means adapted to applythe master letter or the like under pressure to the copy paper.

3. In a machine of the type specified, a master roller, a friction drive for said roller, a first stop pin located on said master roller, a first stop lever adapted to contact with said first stop pin in order to stop the revolution of the master roller, a shaft having a stop disk located thereon,

a second stop pin located upon said stop disk,

a second friction drive for said stop disk, means located on said shaft and adapted to intermittently operate said first stop arm in order to move said first stop arm to the inoperative position, a second stop lever adapted to cooperate with said second stop pin in order to prevent the revolution of the stop disk, and control finger I means connected to said second stop lever said control finger means being actuated by the movement of a copy paper through the machine.

4. In a machine of the type specified, movable pressure means adapted to apply a master letter or the like to a sheet of copy paper, a drive for said movable pressure means, a first control device adapted to control the movement of said pressure means, and a second control device adapted to intermittently operate said first control device, said second control device being operated by the movement of copy paper through V the machine.

5. In a machine of the type specified, a master roller, a friction drive therefor, control mechanism adapted to hold said master roller against movement, and mechan sm adapted to intermittently actuate said control mechanism, and second control means for said mechanism operable by the passage of paper through the machine.

6. In a copy multiplying device, means for moistening the sheets to be printed comprising a roller having a substantially non-absorbent surface, a moisture reservoir spaced therefrom and a plurality of non-absorbent rolls for transferring moisture from said reservoir to said roller.

7. In a machine of the hectograph type, means adapted to guide the copy paper, a supply tank, means adapted to maintain a body of liquid in said tank at a constant level, a roller having a non-porous periphery and adapted to contact with the copy paper, a plurality ofnon-absorbent 115 rolls adapted to supply liquid from said tank to the periphery of said roller in the form of a thin surface film, and means adapted to applythe master letter or the like to the copy paper after it has been moistened.

' CHARLES WESLEY JEAN. 

